linux-toradex.git/fs/proc, branch v2.6.32.6

procfs: fix /proc//stat stack pointer for kernel threads

2009-11-18T01:40:33+00:00

Fix a small issue for the stack pointer in /proc//stat.  In case of a
kernel thread the value of the printed stack pointer should be 0.

Signed-off-by: Stefani Seibold 
Cc: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

pidns: fix a leak in /proc dentries and inodes with pid namespaces.

2009-11-12T15:25:57+00:00

Daniel Lezcano reported a leak in 'struct pid' and 'struct pid_namespace'
that is discussed in:

	http://lkml.org/lkml/2009/10/2/159.

To summarize the thread, when container-init is terminated, it sets the
PF_EXITING flag, zaps other processes in the container and waits to reap
them.  As a part of reaping, the container-init should flush any /proc
dentries associated with the processes.  But because the container-init is
itself exiting and the following PF_EXITING check, the dentries are not
flushed, resulting in leak in /proc inodes and dentries.

This fix reverts the commit 7766755a2f249e7e0 ("Fix /proc dcache deadlock
in do_exit") which introduced the check for PF_EXITING.  At the time of
the commit, shrink_dcache_parent() flushed dentries from other filesystems
also and could have caused a deadlock which the commit fixed.  But as
pointed out by Eric Biederman, after commit 0feae5c47aabdde59,
shrink_dcache_parent() no longer affects other filesystems.  So reverting
the commit is now safe.

As pointed out by Jan Kara, the leak is not as critical since the
unclaimed space will be reclaimed under memory pressure or by:

	echo 3 > /proc/sys/vm/drop_caches

But since this check is no longer required, its best to remove it.

Signed-off-by: Sukadev Bhattiprolu 
Reported-by: Daniel Lezcano 
Acked-by: Eric W. Biederman 
Acked-by: Jan Kara 
Cc: Andrea Arcangeli 
Cc: Serge Hallyn 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

hwpoison: fix/proc/meminfo alignment

2009-10-29T14:39:25+00:00

Given such a long name, the kB count in /proc/meminfo's HardwareCorrupted
line is being shown too far right (it does align with x86_64's VmallocChunk
above, but I hope nobody will ever have that much corrupted!).  Align it.

Signed-off-by: Hugh Dickins 
Cc: Andi Kleen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

pagemap: export KPF_HWPOISON

2009-10-08T14:36:39+00:00

This flag indicates a hardware detected memory corruption on the page.
Any future access of the page data may bring down the machine.

Signed-off-by: Wu Fengguang 
Cc: Andi Kleen 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fs: includecheck fix: proc, kcore.c

2009-10-08T14:36:38+00:00

fix the following 'make includecheck' warning:

  fs/proc/kcore.c: linux/mm.h is included more than once.

Signed-off-by: Jaswinder Singh Rajput 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

procfs: disable per-task stack usage on NOMMU

2009-09-25T00:11:24+00:00

It needs walk_page_range().

Reported-by: Michal Simek 
Tested-by: Michal Simek 
Cc: Stefani Seibold 
Cc: David Howells 
Cc: Paul Mundt 
Cc: Geert Uytterhoeven 
Cc: Greg Ungerer 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge branch 'cputime' of git://git390.marist.edu/pub/scm/linux-2.6

2009-09-24T16:04:24+00:00

* 'cputime' of git://git390.marist.edu/pub/scm/linux-2.6:
  [PATCH] Fix idle time field in /proc/uptime

Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6

2009-09-24T14:53:22+00:00

* 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6: (21 commits)
  HWPOISON: Enable error_remove_page on btrfs
  HWPOISON: Add simple debugfs interface to inject hwpoison on arbitary PFNs
  HWPOISON: Add madvise() based injector for hardware poisoned pages v4
  HWPOISON: Enable error_remove_page for NFS
  HWPOISON: Enable .remove_error_page for migration aware file systems
  HWPOISON: The high level memory error handler in the VM v7
  HWPOISON: Add PR_MCE_KILL prctl to control early kill behaviour per process
  HWPOISON: shmem: call set_page_dirty() with locked page
  HWPOISON: Define a new error_remove_page address space op for async truncation
  HWPOISON: Add invalidate_inode_page
  HWPOISON: Refactor truncate to allow direct truncating of page v2
  HWPOISON: check and isolate corrupted free pages v2
  HWPOISON: Handle hardware poisoned pages in try_to_unmap
  HWPOISON: Use bitmask/action code for try_to_unmap behaviour
  HWPOISON: x86: Add VM_FAULT_HWPOISON handling to x86 page fault handler v2
  HWPOISON: Add poison check to page fault handling
  HWPOISON: Add basic support for poisoned pages in fault handler v3
  HWPOISON: Add new SIGBUS error codes for hardware poison signals
  HWPOISON: Add support for poison swap entries v2
  HWPOISON: Export some rmap vma locking to outside world
  ...

sysctl: remove "struct file *" argument of ->proc_handler

2009-09-24T14:21:04+00:00

It's unused.

It isn't needed -- read or write flag is already passed and sysctl
shouldn't care about the rest.

It _was_ used in two places at arch/frv for some reason.

Signed-off-by: Alexey Dobriyan 
Cc: David Howells 
Cc: "Eric W. Biederman" 
Cc: Al Viro 
Cc: Ralf Baechle 
Cc: Martin Schwidefsky 
Cc: Ingo Molnar 
Cc: "David S. Miller" 
Cc: James Morris 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] Fix idle time field in /proc/uptime

2009-09-24T08:16:24+00:00

Git commit 79741dd changes idle cputime accounting, but unfortunately
the /proc/uptime file hasn't caught up.  Here the idle time calculation
from /proc/stat is copied over.

Signed-off-by: Michael Abbott 
Signed-off-by: Martin Schwidefsky